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A comparison between the average jail time of bank robbers

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A comparison between the average jail time of bank robbers and car thieves yielded the following results (in years):

n1=80 x1 bar = 3.2, s1=0.6

n2=90 x2 bar = 2.8 s2=0.7

Estimate the lower bound confidence limit for mu1-mu2?

A.) 0.21

B.) 0.92

C.) 0.08

D.) 0.3

Reference no: EM13622754

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